System.Globalization.EastAsianLunisolarCalendar.ToDateTime C# (CSharp) Метод

        public override DateTime ToDateTime(int year, int month, int day, int hour, int minute, int second, int millisecond, int era) {
            year = CheckYearMonthRange(year, month, era);
            int daysInMonth = InternalGetDaysInMonth(year, month);
            if (day < 1 || day > daysInMonth) {
                BCLDebug.Log("year = " + year + ", month = " + month + ", day = " + day);
                throw new ArgumentOutOfRangeException(
                            "day",
                            String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Day"), daysInMonth, month));
            }

            int gy=0; int gm=0; int gd=0;

            if (LunarToGregorian(year, month, day, ref gy, ref gm, ref gd)) {
                return new DateTime(gy, gm, gd, hour, minute, second, millisecond);
            } else {
                throw new ArgumentOutOfRangeException(null, Environment.GetResourceString("ArgumentOutOfRange_BadYearMonthDay"));
            }
        }